Bluetooth 5.0 mode Uses a Bluetooth chip for faster, more stable connections with low latency and low power consumption. Delivers clearer sound. Threestage timed shutdown Auto poweroff in three settings: 30, 60, or 120 minutes. Easy to set, helps you fall asleep peacefully. Powerful 8hour battery life 400mAh rechargeable lithium polymer battery. Fast charging and long playback time for extended use. 3D surround sound Place the device under your pillow for an immersive listening experience. Realistic 3D stereo sound that enhances sleep and relaxation. Key attributes Compatibility: designed to work with Bluetoothenabled devices for convenient wireless use. Design intent: compact form suitable for pillow placement and bedside use. Performance: efficient battery, stable connection, and clear audio output. Usage scenarios Sleep time audio: listen to calm music, white noise, or guided sleep stories without waking others. Relaxation and meditation: enjoy immersive sound during breathing exercises or mindfulness routines. Bedside or travel listening: use in bed, hotel rooms, or dorms for convenient, hands audio while resting or winding down.